On Sat, 31 Mar 2007, Thomas Gleixner wrote: > > Right, but clock - sources/events need to be extremly late suspended and > early resumed. How can we ensure this ? Make them be at the top of the device tree by adding them early. That's the whole point of the device tree after all - we have an ordering that is enforced by its topology, and that we sort by when things were added. Right now the way things work is (iirc - somebody like Greg should double-check me) is that we add all devices to the power list at device_add() time by traversing the devices fromt he root all the way out, and doing a device_add() which does a device_pm_add(), which in turn adds it to the power-management list - so that the list is always topologically sorted. So the only thing that needs to be done is to make sure that we add the timer devices early during bootup - something we have to do *anyway*. If a device is added early in bootup, that automatically means that it will be suspended late, and resumed early - because we maintain that order all the way through.. Linus - To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
